This survey is aimed at adults (minimum age 23 years) who have had at least one substance-induced psychedelic experience in the past 5 years. If you agree to participate, you will be asked to provide some in-depth information on one psychedelic experience from this period. You will also be asked about potentially stressful like events in the past 5 years.

The survey will take approximately 25 minutes. Your participation is voluntary. You may leave the survey at any time without facing any negative consequences. The survey is anonymous. It is not possible to identify you based on your answers.

This study has been approved by the Institutional Review Board of Technische Universität Dresden, Germany (SR-EK-147032021).